CN109804913A - A kind of construction method of yellow bluestem-endogenetic fungus homobium - Google Patents
A kind of construction method of yellow bluestem-endogenetic fungus homobium Download PDFInfo
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- CN109804913A CN109804913A CN201910042721.1A CN201910042721A CN109804913A CN 109804913 A CN109804913 A CN 109804913A CN 201910042721 A CN201910042721 A CN 201910042721A CN 109804913 A CN109804913 A CN 109804913A
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- endogenetic fungus
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Abstract
The invention discloses a kind of yellow bluestem-endogenetic fungus homobium construction methods, select full Aries grass seed, peel off glumelle, obtain purebred son, the plant for completing switching is put back to new PDA culture medium, cultivated one week under dark and illumination alternation condition by the meristematic regions that Endophytic Fungal Hyphae is penetrated to chitting piece, it is transplanted to sterile vermiculite, continuously detects 6 months contamination rates.This method is easy to operate, and success rate is high, can effectively improve human relay working efficiency.The seed of success microbiological contamination plant is seeded in the primary habitat in field, to reach the yellow bluestem endogenetic fungus homobium cultivated and stablize passage, Vulnerable Ecosystem plant-microorganism joint is served and repairs.
Description
Technical field
The present invention relates to damaged ecosystem plant-microorganism combined remediation technology, in particular to dogstail-endogenetic fungus is total
The construction method of raw body particularly belongs to a kind of construction method of yellow bluestem-endogenetic fungus homobium.
Background technique
Yellow bluestem [Bohtriochloa ischaemum (L.) Keng] is grass family Bothriochloa perennial grass, is belonged to
Like middle benefit gas xerophyte.Yellow bluestem is that rhizome dredges numerous dogstail under clump type, and well developed root system has short rhizome, and tillering ability is strong, can shape
At a large amount of basal leaf clumps.Yellow bluestem group is the representational vegetation pattern in China Temperate forest grassland region, and fallen leaves are wealthy
The secondary vegetation type that occurs after leaf Forest destroys, be distributed widely in the southeast Loess Plateau and south low mountains and hills,
Warm-temperature zone location at the top of beam loess hills.In addition, yellow bluestem has many characteristics, such as drought resisting, disease-resistant, have in mining area vegetation reparation larger
Advantage, be increasingly becoming dominant population.
Endogenetic fungus (Endophyte) is to live in the tissue of live plant aerial part, without causing host plant
The fungi of obvious Disease symptoms.The host plant of endogenetic fungus includes multiple monoids such as draft, shrub, coniferous tree and algae,
Middle research is most commonly used to be and cold-season-type dogstail symbiosisBelong to endogenetic fungus, the standing grain of at least 30 categories in the whole world
Grass infects the category endogenetic fungus.Recent study finds that in ecology of mining areas reparation, yellow bluestem infects a variety of endogenetic fungus, wherein
Yellow bluestem infectionSibiria endogenetic fungus and its homobium have excellent resist to biotic and abiotic stress
Therefore inverse property successfully constructs yellow bluestem-endogenetic fungus homobium and is of great significance to restoration of the ecosystem efficiency is improved.
Traditional human relay working construction method mainly carries out seedling switching, callus and strain to artificial cultivation dogstail
Based on tiller switching method.Seedling switching and callus switching are not only easy to damage host plant, and survival rate is lower, is difficult
Feeling of success dye host and stable passage in field.Although the survival rate of strain switching is improved, but to natural dogstail host's
Success contamination rate is relatively low, is unfavorable for the natural dogstail restoration of the ecosystem of large area.Currently, not finding also a kind of more feasible
Yellow bluestem-endogenetic fungus homobium construction method.
Summary of the invention
The purpose of the present invention is to provide a kind of higher yellow bluestem of contamination rate-endogenetic fungus homobium construction method,
And apply this method to damaged ecosystem it is biological prosthetic in.
A kind of construction method of yellow bluestem-endogenetic fungus homobium provided by the invention, includes the following steps:
(1) full Aries grass seed is selected, seed is impregnated after five minutes in sterile water, peels off glumelle, is obtained purebred
Son is placed in the desiccation culture ware after sterilizing；
(2) on the super-clean bench, downward by seed plumular axis, and radicle alignment 45 ° of oblique cuttings of bacterium colony enter purified endogenetic fungus
In bacterium colony；
(3) it is cultivated 7-10 days under 25 DEG C of dark conditions, germination situation on culture dish is observed, if there is living contaminants to answer
Excision in time；
(4) microscope determines the meristematic regions of chitting piece, first pricks an aperture with asepsis injector syringe needle, does not stab
Plant is worn, then the fresh mycelia of a small amount of endogenetic fungus of picking, is rolled into spherical shape, and spherical mycelia is penetrated and completes to transfer in aperture；
(5) plant for completing switching is put back into new PDA culture medium, after being cultivated 7 days under dark and illumination alternation condition, moved
Sterile vermiculite is planted, the contamination rate of detection in every 1-2 months detects 6 months.
The method of the present invention applies also for infecting the natural dogstail of similar endogenetic fungus, such as Arizona fescue grass, plumage thatch, Gao Yang
Thatch etc..
Compared with prior art, the invention has the advantages that:
The present invention is in homobium building process using seed peels off glumelle, mycelia penetrates plant meristematic regions etc. and arranges
It applies, significantly improves switching survival rate of plant and the successful contamination rate of host, the experimental results showed that, it is survived using the method for the present invention
The success rate yellow bluestem that endogenetic fungus is transferred in plant reaches 97%, and Arizona fescue grass reaches 95%.It will success microbiological contamination plant
Seed be seeded in the primary habitat in field, can preferably realize in the primary habitat in field plantation dogstail-endogenetic fungus homobium
Vulnerable Ecosystem plant-microorganism joint remediation efficiency can be improved using its resistance to heavy metal and degeneration-resistant advantage in purpose.
Detailed description of the invention
Fig. 1 is the transit location schematic diagram of yellow bluestem endogenetic fungus；
Fig. 2 is that yellow bluestem separate living tissue accesses Endophytic Fungal Hyphae schematic diagram.
Specific embodiment
The present invention is further described below with reference to specific example, but application range of the invention is not limited to that.
Embodiment 1: the forwarding method of yellow bluestem endogenetic fungus
300 Aries grass seed in total is selected, seed immersion is removed into glumelle in about 5 minutes in water.Before switching experiment,
By rose-bengal decoration method detection confirmation without infection endogenetic fungus under microscope.PDA training is placed on after the surface of the seed sterilizing
It supports on base, 5 in each culture dish, is placed in 25 DEG C of incubators dark culture 10 days.On the super-clean bench, downward by seed plumular axis,
And radicle alignment 45 ° of oblique cuttings of bacterium colony enter in bacterium colony.The germination for observing seed, after germination, on aseptic nipper extraction bacterium colony
The seed to have germinateed is placed on periphery P DA culture medium.Under the microscope, the separate living tissue for first finding plant, uses asepsis injector
Syringe needle pricks aperture (Fig. 1) (being sure not to expose plant), and then picking fresh mycelia and is rolled into spherical shape on a small quantity, directly penetrates aperture
It is interior, it is put into Endophytic Fungal Hyphae (Fig. 2).The plant for completing switching is put back into new PDA culture medium, rear dark and illumination alternating
It culture 7 days (12h is dark, 12h illumination), is transplanted in sterile vermiculite, is put into greenhouse and grows, the microbiological contamination of detection in every 1 month
Rate detects 6 months.The experimental results showed that carrying out human relay working using this method, the success that endogenetic fungus is transferred in plant is survived
Rate reaches 97%.
Embodiment 2: the forwarding method of Arizona fescue grass endogenetic fungus
100 Arizona fescue grass seeds in total are selected, seed immersion is removed into glumelle in about 5 minutes in water.It is transferring
Before experiment, under the microscope by rose-bengal decoration method detection confirmation without infection endogenetic fungus.It is put after the surface of the seed sterilizing
It sets in PDA culture medium, 5 in each culture dish, is placed in 25 DEG C of incubators dark culture 7 days.On the super-clean bench, by seed embryo
Axis downward, and radicle alignment 45 ° of oblique cuttings of bacterium colony enter in bacterium colony.The germination of seed on culture dish in 10 days is observed, use is sterile
The seed to have germinateed on tweezers extraction bacterium colony, is placed on periphery P DA culture medium.Under the microscope, mitogenetic group for first finding plant
It knits, pricks aperture (being sure not to expose plant) with asepsis injector syringe needle, then picking fresh mycelia and is rolled into spherical shape on a small quantity, directly
It connects and penetrates in aperture, be put into Endophytic Fungal Hyphae.The plant for completing switching is put back into new PDA culture medium, rear dark and light
According to alternate culture 7 days (12h is dark, 12h illumination), it is transplanted in sterile vermiculite, is put into greenhouse and grows, detection one in every 2 months
Secondary contamination rate detects 6 months.The experimental results showed that carrying out human relay working using this method, survives endogenetic fungus in plant and transfer
Success rate reach 95%.
Claims (2)
1. a kind of yellow bluestem-endogenetic fungus homobium construction method, which comprises the steps of:
(1) full Aries grass seed is selected, seed is impregnated after five minutes in sterile water, peels off glumelle, purebred son is obtained and sets
In desiccation culture ware after sterilizing；
(2) on the super-clean bench, downward by seed plumular axis, and radicle alignment 45 ° of oblique cuttings of bacterium colony enter purified endogenetic fungus bacterium colony
In；
(3) it is cultivated 7-10 days under 25 DEG C of dark conditions, observes germination situation on culture dish, if there is living contaminants timely
Excision；
(4) microscope determines the meristematic regions of chitting piece, first pricks an aperture with asepsis injector syringe needle, does not expose plant
Strain, then the fresh mycelia of a small amount of endogenetic fungus of picking, is rolled into spherical shape, and spherical mycelia is penetrated and completes to transfer in aperture；
(5) plant for completing switching is put back into new PDA culture medium, after being cultivated 7 days under dark and illumination alternation condition, be transplanted to
Sterile vermiculite, the contamination rate of detection in every 1-2 months, is detected 6 months.
2. a kind of construction method of yellow bluestem-endogenetic fungus homobium as described in claim 1, which is characterized in that described
Yellow bluestem is substituted with Arizona fescue grass.
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| CN201910042721.1A CN109804913B (en) | 2019-01-17 | 2019-01-17 | Method for constructing aegilops tauschii-endophytic fungi symbiont |
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| CN201910042721.1A CN109804913B (en) | 2019-01-17 | 2019-01-17 | Method for constructing aegilops tauschii-endophytic fungi symbiont |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099959A (en) * | 2021-04-14 | 2021-07-13 | 贵州省草业研究所 | Method for improving germination rate of seeds of festuca arundinacea under drought resistance |
| CN114902914A (en) * | 2022-05-09 | 2022-08-16 | 兰州大学 | Construction method of wild barley-endophytic fungi symbiont |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099959A (en) * | 2021-04-14 | 2021-07-13 | 贵州省草业研究所 | Method for improving germination rate of seeds of festuca arundinacea under drought resistance |
| CN114902914A (en) * | 2022-05-09 | 2022-08-16 | 兰州大学 | Construction method of wild barley-endophytic fungi symbiont |
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| CN109804913B (en) | 2021-09-28 |
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